1/* 2 * Copyright (c) 2012 Broadcom Corporation 3 * Copyright (c) 2012 Canonical Ltd. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 14 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 15 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17#include <linux/debugfs.h> 18#include <linux/if_ether.h> 19#include <linux/if.h> 20#include <linux/net.h> 21#include <linux/netdevice.h> 22#include <linux/ieee80211.h> 23#include <linux/module.h> 24#include <net/mac80211.h> 25 26#include <defs.h> 27#include <brcmu_wifi.h> 28#include <brcmu_utils.h> 29#include "types.h" 30#include "main.h" 31#include "debug.h" 32#include "brcms_trace_events.h" 33 34static struct dentry *root_folder; 35 36void brcms_debugfs_init(void) 37{ 38 root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL); 39 if (IS_ERR(root_folder)) 40 root_folder = NULL; 41} 42 43void brcms_debugfs_exit(void) 44{ 45 if (!root_folder) 46 return; 47 48 debugfs_remove_recursive(root_folder); 49 root_folder = NULL; 50} 51 52int brcms_debugfs_attach(struct brcms_pub *drvr) 53{ 54 if (!root_folder) 55 return -ENODEV; 56 57 drvr->dbgfs_dir = debugfs_create_dir( 58 dev_name(&drvr->wlc->hw->d11core->dev), root_folder); 59 return PTR_ERR_OR_ZERO(drvr->dbgfs_dir); 60} 61 62void brcms_debugfs_detach(struct brcms_pub *drvr) 63{ 64 if (!IS_ERR_OR_NULL(drvr->dbgfs_dir)) 65 debugfs_remove_recursive(drvr->dbgfs_dir); 66} 67 68struct dentry *brcms_debugfs_get_devdir(struct brcms_pub *drvr) 69{ 70 return drvr->dbgfs_dir; 71} 72 73static 74ssize_t brcms_debugfs_hardware_read(struct file *f, char __user *data, 75 size_t count, loff_t *ppos) 76{ 77 char buf[128]; 78 int res; 79 struct brcms_pub *drvr = f->private_data; 80 81 /* only allow read from start */ 82 if (*ppos > 0) 83 return 0; 84 85 res = scnprintf(buf, sizeof(buf), 86 "board vendor: %x\n" 87 "board type: %x\n" 88 "board revision: %x\n" 89 "board flags: %x\n" 90 "board flags2: %x\n" 91 "firmware revision: %x\n", 92 drvr->wlc->hw->d11core->bus->boardinfo.vendor, 93 drvr->wlc->hw->d11core->bus->boardinfo.type, 94 drvr->wlc->hw->boardrev, 95 drvr->wlc->hw->boardflags, 96 drvr->wlc->hw->boardflags2, 97 drvr->wlc->ucode_rev 98 ); 99 100 return simple_read_from_buffer(data, count, ppos, buf, res); 101} 102 103static const struct file_operations brcms_debugfs_hardware_ops = { 104 .owner = THIS_MODULE, 105 .open = simple_open, 106 .read = brcms_debugfs_hardware_read 107}; 108 109void brcms_debugfs_create_files(struct brcms_pub *drvr) 110{ 111 struct dentry *dentry = drvr->dbgfs_dir; 112 113 if (!IS_ERR_OR_NULL(dentry)) 114 debugfs_create_file("hardware", S_IRUGO, dentry, 115 drvr, &brcms_debugfs_hardware_ops); 116} 117 118#define __brcms_fn(fn) \ 119void __brcms_ ##fn(struct device *dev, const char *fmt, ...) \ 120{ \ 121 struct va_format vaf = { \ 122 .fmt = fmt, \ 123 }; \ 124 va_list args; \ 125 \ 126 va_start(args, fmt); \ 127 vaf.va = &args; \ 128 dev_ ##fn(dev, "%pV", &vaf); \ 129 trace_brcms_ ##fn(&vaf); \ 130 va_end(args); \ 131} 132 133__brcms_fn(info) 134__brcms_fn(warn) 135__brcms_fn(err) 136__brcms_fn(crit) 137 138#if defined(CONFIG_BRCMDBG) || defined(CONFIG_BRCM_TRACING) 139void __brcms_dbg(struct device *dev, u32 level, const char *func, 140 const char *fmt, ...) 141{ 142 struct va_format vaf = { 143 .fmt = fmt, 144 }; 145 va_list args; 146 147 va_start(args, fmt); 148 vaf.va = &args; 149#ifdef CONFIG_BRCMDBG 150 if ((brcm_msg_level & level) && net_ratelimit()) 151 dev_err(dev, "%s %pV", func, &vaf); 152#endif 153 trace_brcms_dbg(level, func, &vaf); 154 va_end(args); 155} 156#endif 157